Employee Benefit Plans - Stock Activity, Weighted Average Exercise Price (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Jul. 31, 2024	Apr. 26, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Service Stock Options Awards
Shares
Options outstanding, beginning balance (in shares)			17,336,362
Options exercisable, beginning balance (in shares)			8,288,944
Options unvested, beginning balance (in shares)			9,047,418
Granted (in shares)			12,227,935	6,849,689	3,261,724
Exercised (in shares)			(77,500)
Forfeited (in shares)			(3,362,649)
Options outstanding, end balance (in shares)			26,124,148	17,336,362
Options exercisable, ending balance (in shares)			9,965,432	8,288,944
Options unvested, ending balance (in shares)			16,158,716	9,047,418
Weighted Average Exercise Price
Options outstanding, beginning balance, weighted-average exercise price			$ 11.37
Options exercisable, beginning balance, weighted-average exercise price			11.84
Options unvested, beginning balance, weighted-average exercise price			10.94
Granted, weighted-average exercise price			2.25
Exercised, weighted-average exercise price			13.4
Forfeited, weighted-average exercise price			15.35
Options outstanding, ending balance, weighted-average exercise price			6.62	$ 11.37
Options exercisable, ending balance, weighted-average exercise price			10.99	11.84
Options unvested, ending balance, weighted-average exercise price			$ 3.92	$ 10.94
Stock option activity additional disclosures
Options outstanding, weighted-average remaining contractual term			7 years 8 months 26 days	7 years 10 months 9 days
Options exercisable, weighted-average remaining contractual term			5 years 10 months 24 days	6 years 2 months 4 days
Options unvested, weighted-average remaining contractual term			8 years 10 months 17 days	9 years 4 months 20 days
Options outstanding, aggregate intrinsic value			$ 735	$ 11,391
Options exercisable, aggregate intrinsic value			166	7,250
Options unvested, aggregate intrinsic value			$ 569	$ 4,141
Expiration period			10 years
Weighted-average grant date fair value of options granted (per share)			$ 1.63	$ 4.88	$ 13.39
Fair value of stock options that vested during the period			$ 26,000	$ 33,100	$ 22,600
Expected term of options (years)				5 years	5 years
Risk Free interest rate, minimum (as a percent)			3.48%	3.40%	1.26%
Risk Free interest rate, maximum (as a percent)			4.63%	4.69%	4.34%
Volatility, minimum (as a percent)			85.00%	80.02%	73.38%
Volatility, maximum (as a percent)			97.82%	92.55%	85.97%
Dividend Yield			0.00%
Unrecognized compensation cost			$ 35,500
Period for recognition			1 year 11 months 8 days
Intrinsic fair value of options exercised			$ 100	$ 5,300	$ 15,100
Compensation cost			$ 21,800	$ 31,500	$ 27,500
Service Stock Options Awards | Minimum
Stock option activity additional disclosures
Vesting period			1 year
Expected term of options (years)			1 year
Service Stock Options Awards | Maximum
Stock option activity additional disclosures
Vesting period			3 years
Expected term of options (years)			5 years
Service Stock Options Awards | Management
Stock option activity additional disclosures
Vesting period			1 year
Service Stock Options Awards | Employee
Stock option activity additional disclosures
Vesting period			3 years
Expiration period			10 years
Market Condition Stock Option Awards
Shares
Options outstanding, beginning balance (in shares)			21,925,000
Options exercisable, beginning balance (in shares)			2,782,000
Options unvested, beginning balance (in shares)			19,143,000
Granted (in shares)			2,952,500
Exercised (in shares)			0	0	0
Forfeited (in shares)			(12,311,500)
Expired (in shares)	500,000	2,452,500
Options outstanding, end balance (in shares)			12,566,000	21,925,000
Options exercisable, ending balance (in shares)			5,372,667	2,782,000
Options unvested, ending balance (in shares)			7,193,333	19,143,000
Weighted Average Exercise Price
Options outstanding, beginning balance, weighted-average exercise price			$ 21.32
Options exercisable, beginning balance, weighted-average exercise price			26.92
Options unvested, beginning balance, weighted-average exercise price			20.5
Granted, weighted-average exercise price			2.42
Forfeited, weighted-average exercise price			25.45
Options outstanding, ending balance, weighted-average exercise price			12.83	$ 21.32
Options exercisable, ending balance, weighted-average exercise price			22.46	26.92
Options unvested, ending balance, weighted-average exercise price			$ 5.63	$ 20.5
Stock option activity additional disclosures
Options outstanding, weighted-average remaining contractual term			5 years 25 days	5 years 3 months 7 days
Options exercisable, weighted-average remaining contractual term			4 years 1 month 9 days	4 years 8 months 23 days
Options unvested, weighted-average remaining contractual term			5 years 9 months 10 days	5 years 4 months 6 days
Vesting period			3 years
Weighted-average grant date fair value of options granted (per share)			$ 0.49	$ 4.32	$ 9.73
Fair value of stock options that vested during the period			$ 25,500	$ 20,800	$ 20,800
Remaining VWAP performance period (years)			3 years	3 years	3 years
Risk Free interest rate, minimum (as a percent)			4.01%
Risk Free interest rate, maximum (as a percent)			4.57%
Risk-free interest rate (as a percent):				3.60%	3.10%
Volatility, minimum (as a percent)			85.00%
Volatility, maximum (as a percent)			90.00%
Expected volatility (as a percent)				75.00%	75.00%
Closing stock price on grant date				$ 7.87	$ 26.38
Option expected to vest (in shares)			2,513,333
Unvested stock options expected to vest period for calculation of weighted- average exercise price			5 years 4 months 17 days
Compensation expense reversals compensation cost			$ 25,100
Unrecognized compensation cost			5,900
Aggregate intrinsic value of unvested performance stock options			$ 0
Period for recognition			1 year 6 months 7 days
Compensation cost			$ 12,900	$ 64,000	$ 95,700
Percentage of performance stock options			33.00%
Threshold number of specified trading days			30 days
Options exercisable (as a percent)			200.00%
Market Condition Stock Option Awards | Minimum
Stock option activity additional disclosures
Vesting period			7 years
Closing stock price on grant date			$ 2.41
Market Condition Stock Option Awards | Maximum
Stock option activity additional disclosures
Vesting period			10 years
Closing stock price on grant date			$ 2.47
Market Condition Stock Option Awards | Share-Based Payment Arrangement, Tranche one
Stock option activity additional disclosures
Volume weighted average price			$ 7.5